Gearing.



G. B. READ.

GEARING.

APPLICATION FILED .IULY22, I912."

LIYOABO. Patented Feb. 1, 1916.

3 SHEETSSHEET I.

BY %w Aw.

THE cpLUMBIA PLANOGRAPH cm, WASHINGTON, D. c.

G. B. READ.

GEARING.

APPLICATION FILED JULYZZ. 1912.

1,17,460. Patented Feb. 1, 1916.

3 SHEETS-SHEET 2.

FIG.3

"; .n l l lllfl flL lllllllllllll 9 U INVENTOR G. B. READ.

GEARING.

APPLICATION FILED IULYZZ, I912. 1,170,460. Patented Feb.1, 1916.

3 SHEETS-SHEET 3-,

WITNESSES INV NTOH *giw* BY f' ATTY.

THB COLUMBIA PLANOGRAPH 60., WASHINGTON, D- c.

GEORGE B. READ, 0F BLOOMING'ION, ILLINOIS.

GEARING.

Specification of Letters Patent.

Patented net. 1, min.

Application filedJuly 22, 1912. Serial No. 710,798.

To all whom it may concern:

Be it known that I, GEORGE E. READ, a

citizen of the UnitedStates, residing at to a wagon dump used upon the farm in handling grain.

The object of my invention is to provide an efficient raising means, and especially to provide means for controlling the gravity descent of the wagon.

My invention consists essentially of me 'chanically connected parts adapted to raise a loaded vehicle and aportion of the same means and auxiliary partscorrelated to act connectedly to brake against the descent of the wagon through the normal friction of the parts when actuated under the gravity pull of the wagon.

That my invention may be more fully understood, reference is had to the accompanying drawings, in which-- Figure 1 is a front view showing a part of the framework of what is called an overheaddump, with my device attached; Fig. 2is a side elevation of my device connected to thedump framing; Fig. 3 isa view from the opposite side of that shownin Fig. 1, and showing my device attached to the dump framing; Fig. 4 is a detail'view of a unit spur wheel; Fig. 5 is a detail view of a cograck; Fig. 6 is a plan view of a clutch shifting frame, and Fig. 7 is an end view of the same frame disclosed in Fig. 6.

It has been found impractical to utilize raising means whether it be screw or gear connection, alone, to brake against thegraw ity descent of a wagon. Likewise, specially designed friction devices for the purpose are difficult to controland to keep in working condition, and I have discovered that I am able to utilize a portion of the raising .mechanism, and by auxiliary connections shifted into connected relation and a portion of the raising connection out of operation, I am able, by proportioning the parts, to control the descent of the wagon absolutely at any speed desired, thereby producing a mechanism that is cheap and durable. and eiiicient under all circumstances of use.

Referring to the drawings, A refers to uprights and B tothe base of one section of an overhead dump or ack showing my clevices attached. However, the mechanism may be connected and associated with what is called a low down dump or jack as well, if desired.

Referring now particularly to the raising mechanism, 2 is a shaft squared at both ends as at 3 and is adapted in practice to be connected to be driven from either end, as desired-and from any suitable power, as for instance, the tumbling rod of a horsepower or connection with an elevator shaft of a dump and elevator which derives its power from a horse power or other suit-able power. Shaft 2 and other parts are sup ported in suitable bonings as 4 in a cast frame 5 connected to the framing as at 6, 7 and 8, and is held from longitudinal movement therein by means of the serrated caps 9 and pins 10 in the-common and well known manner.

11 is a worm normally loose on shaft 2.

12 is a bevel gear likewise normally loose on shaft 2, there being provided thecommo-n shoulder and slot connection between the worm and bevel gear as at 12 l3is a clutch sleeve adapted to be splined on shaft 2 and is adapted to be alternately engaged with clutch part 1 1 on worm 11 and to be disengaged therefrom.

15 is a framing in form best shown in Figs 6 and 7 adapted to be supported on shaft 2, and is provided with inturned fingers 16 engaging a runway circumferentially of clutch13.

17 is a lever pivoted intermediate its ends as at 18 and is connected with clutch shifting frame 15 as at 19. Manipulation of lever 17 will effect a connection or disconnection of worm 11 with shaft 2 to render the same fast or loose thereon as may be desired, said lever being slotted as at 17 tween the fulcrum point of the lever and its connection with clutch frame 15.

20 is a winding shaft carrying a spiral drum 21 fixed thereon, said shaft being supported in boxing 22 in cast frame and in boxing 23 on a portion of framing A; A chain as 241 is adapted to be connected at one of its ends to drum 21 and its other end and the latter being driven in the proper to work in conjunction with parts adapted to be connected to the wheels or other part of a wagon. 25 is a worm wheel fixed upon shaft 2 and in the raising operation is adapted for engagement with worm 11.

To effect the raising operation, clutch 13 is adapted to be shifted to engage worm 11,

and to be operated by direction will serve to drive worm wheel 25 and with it shaft 20, to which it is fixed, resulting in chain 24 being wound upon drum 21 causing the wagon to be raised.

For the-purpose of limiting the upward movement of the wagon, I have provided th rack bar 26 supported in slideway 27 upon the body of cast frame 5 and the unit spur wheel 28 fixed on shaft 20. The notches in cog rack 26 are properly spaced apart for working in conjunction with unit spur 28 turning under the weight of the load. Ob-' viously, the raising operation can be stopped at any pointibythe manual operation of lever 17. v y

To accomplish the controlled descent of tliewagon under the friction brake of the connected mechanism, I have providedmechanism for shifting the load from the worm and for driving the worm in advance and in clearance from the teeth of worm wheel 25.

The mechanism for accomplishing this purpose comprises cog wheel 30 on short shiftable shaft 31 carried in bracket 32 and journaled in a pair of bars 31 their lower ends beingjournaled on shaft 20, said bracket 1 being connected by means of arm 33 with wheel 25.

lever 17 above its fulcrum point. This connection enables shaft 31 to be shifted so that the cogs of cog wheel 30 may occupy different positions relative to the teeth. of worm 3 1 is'a sprocket wheel fixed on shaf 31 and is connected by means of sprocket chain 35 with sprocket wheel 36 (see Figs. 2 and 3).. loose on stub shaft 37 which latter is fixed in boxingl of casting 5.

38 is a bevel gear, the same being in-- tegrally connected and forming one body with sprocket wheel 36 and meshing with bevel wheel 12, the latter being normally loose on shaft, 2', but operating in connec 'tion with worm 11 as shown.

In the operationof my device, when the worm 11 is driven from the power 1t turns in the direction of the arrow, resulting in the driving of worm wheel 25 in the direction shown by the arrow, serving to wind cham 24 upon. drum 21 n the manner it is connected and purposed to be wound, as

shownin Fig. 3. During such raisingoperation, there is a drive connectlon from worm 11 to wheel 25 and the position of cog wheel 30 with. relation to wheel 25 is such thatsaid lever17 is shifted forwardly a short distance and its movement, through the connection of reach 33 with stub shaft 31, will shift cog wheel 30 to a position whereby its teeth engaging the teeth of worm wheel 25 will cause said cog wheel to rotate slightly, and through the sprocket wheels 34:, 36, sprocket chain 35, and bevel gears 38, 12-,the

worm 11 will be turned sufficiently to free worm. wheel 25, thereby releasing the support for the load and by gravity thewagon will descend, imparting a reverse turning to winding shaft 20 and corresponding reverse action of worm wheel 25, cog wheel 30, sprocket wheels 34k and 36, bevelgears 38 and 12, and worm 11 in clearance ofworm wheel25. Under normal conditions, the friction of the connected parts named issufficient to control the descent of the wagon at the proper and desired speed.& If, however, it is desired to check the speed, as it might be, if it were desired to lower theloaded wagon after it were raised, or if an unusually heavy wagon were employed, it may be accomplished by a slight additional forward movement of lever 17 whichwill serve to throw the teeth of worm wheel 25 into any degree of frictional engagement desired against the face of the worm opposite that ofits normal bearing, or asis generally the practice the lever may be shifted in the opposite direction tocause-any degree of frictional bearing that is desired against the face of the worm that normally serves asthe driving face and stop. Q r

I have shown herein one form of embodiment of my invention but realizing that other forms of embodiment may be employed to effect the purpose, I therefore do not desire to limit myself to the form and particular arrangement ofparts disclosed, but cla1m as my invention all forms of embodiment that fall legitimately within the principle thereof.

1. In a gearing for wagon dumps, a frame structure, a-driven shaft, a drive shaft, a

worm on the drive shaft, a worm wheel driven therefrom connected with the driven shaft and normally in engagement with the worm, means for shiftingthe worm and including means for turning the same in clearance of the worm wheel to permit the driven shaft to turn freely in reverse direction.

2. In a gearing for wagon dumps, a frame structure, a driven shaft supported therein, a drive shaft, a worm thereon. a worm wheel on the driven shaft adapted. to be driven from the worm and means for shifting the worm out of engagement with the worm wheel and including means for turning the worm in clearance of the worm wheel to permit the reverse rotation of the driven shaft.

In a gearing for wagon dumps, in combination, a frame structure, a reversible driven shaft supported in connection there with, a drive shaft, a worm thereon, a worm wheel upon the driven shaft normally in engagement with the worm and adapted'to be driven to rotate the driven shaft in one direction, means connected with the worm wheel for shifting the worm including means actuated by the reverse rotation of the driven shaft to turn the worm in clearance of the worm wheel. a a

4. Ina gearing for wagon dumps, in combination, a frame structure, a reversible drivenshaft, a drive shaft, a worm thereon, a-worm wheel upon the driven shaft nor mally in engagement with the worm, means for shifting the worm relative to the worm wheel to relieve the normal braking force therebetween and connecting means between the driven and the drive shaft independent of the worm, operable by the reverse rotation of the driven shaft toturn the worm in substantial clearance of the worm wheel.

In a gearing for wagon dumps, incombination, a frame structure, a reversible driven shaft, a drive shaft, a worm" thereon, a worm wheel connected with the driven shaft and normally engageable by the worm to turn the driven shaft, related shiftable members engageable with the worm to turn it initially substantially in clearance of the worm wheel and operable through the reverse movement of the driven shaft to maintain such clearance.

6. In a gearing for Wagon dumps, in combination, a frame structure, a reversible driven shaft, a drive shaft, a worm thereon, a worm wheel on the driven shaft engageable by the worm to effect a movement of the driven shaft in one direction, mechanism in dependent of the worm. connecting the driven and drive shafts and means for shifting thesaid mechanism to effect clearance between the worm 'andworm wheel to relieve, the braking force therebetween and permit a reverse movement of the driven shaft and to turn said worm through the reverse movement of said driven shaft during the period of such reverse movement.

7. In a device of the class described, a worm, a driven shaft, a worm wheel engageablewith the worm, means for shifting the worm initially to relief position relative to the worm wheelincluding mechanism connecting the driven shaft with the worm to turn the latter in substantial clearance of the worm wheel. to facilitate a reverse movement of the driven shaft.

8. In a device of the class described, a worm, a driven shaft, a worm wheel engageable with the worm, means for shifting the worm initially to relief position relative to the worm including gear connections be tween the driven shaft and the worm operable to turn the latter from the former to permit the reverse movement of the driven shaft. i

9. In a device of the class described, in combination, a suitable frame structure, a driven shaft, a worm, a worm wheel on said shaft driven from said worm during the movement of the shaft in one direction, gear com'iections from. said shaft independent of the worm to reversely turn the latter, a shiftable member connected with said gear connection between said driven shaft and said worm to shift the latter in initial relief of the worm wheel wherebythe driven shaft is free to reversely rotate.

10. In a device of the class described, in combination, a suitable framing, a driving shaft and a driven shaft thereon, a worm gear norn'ially loose on the drive shaft, a worm wheel on the driven shaft in engagement with the worm during the movement oftheshaft in one direction, a shiftable auxiliary gear connection between the driven shaft and the worm adapted to re lease the worm wheel from its engagement with the worm and to turn the worm in clearance of the worm wheel.

11. Ina device of the class described, in combination, a suitable framing, a driving and a driven shaft thereon, a worm gear normally loose on the drive shaft, a worm wheel on the driven shaft in engagement with the worm during the movement of the driven shaft in one, direction, a shiftable auxiliary gear connection between the driven shaft and the worm adapted to release the worm wheel from its engagement with the worm and to turn the worm in clearance of said worm wheel, and means for shifting the auxiliary gear connection between the worm wheel and the worm.

12. In a device of the class described,the combination of a train of gearing including a worm and a worm wheel normally in locked relation, and means'operable during the operation of the tram of gearing for angularly advancing or retracting the worm with reference to the worm Wheel to control the operation of the latter.

l3. In a device of the class described, the combination of a train. of gearingincluding a worm, and worm wheel having a normal locking relation and means for changing the operative relation of said worm and worm wheel during operation, whereby said worm and Worm wheel members may be correlated for driving and braking relation or may be separated for reverse movement and driven in clearance respectively each ofthe other. i

14. In a device of the class described, the combination of a train of gearing including a worm and worm wheel, power operated means for driving the gearing in one direction, means for imparting a reverse move ment to the gearing and means for changing the operative relation of the worm and worm wheel members for controlling the reverse movement thereof.

15. In a device of the class described, th combination of a train of gearing including a worm and worm wheel, power actuated means for driving the gearing in one direction, means for disconnecting the power actuated means, mechanism for imparting a reverse movement to the gearing and manlilally operable means for changing the operative relation of the worm and worm wheel members of the gearing during operation, whereby the worm wheel is operated by the reverse movement of the gear train so as to allow the gearing to operate. I

16. In a device of the class described the combmation of an operable member, a worm having a locking relation with the operable member,mechanism connected with the operable member for rotating the Worm so' as to allow the operable member to operate, and means for changing the relation of the worm, and operable member during operationso as to control the operation of the.

operable member.

17. In a device of the class described, the combination of a driven member, means for driving said member forwardly including a worm said worm having a frictional brake relation with the driven member, mechanism whereby the worm is operated by the driven member in its reverse movement and means for changing the friction relation of the worm and driven member to control the reverse operation of the latter.

18. In a device of the class described, the combination of a driven member, means for driving said member forwardly including a worm, said worm having a frictional brake relation with the driven member, and mechanism operated bythe driven member in its reverse movement for drivin the worm.

19. In. a device of the class described the combination of armember adapted to be driven, driving mechanism adapted to operate said member in one direction, means for causing the member to" operate in the reverse direction independent ,of the driving mechanism, and gearing operatively con nected wlth the member, and having a fr1c.-I=

tionally engaged worm for regulating the reverse operation for, the member.

20. In a device of the class .described the combination of a driven member, a plurality of elements having a related and coincidentoperation with the drlven member and. means for ad ust1ngthe relation of saldv relation of the gearing, to cause a frictional engagement of parts and control the operation of the driven member. V r

22. In a device of the class described, the combination of a driven member, means for driving said member including L 'W0l11'l,

said 'worm having a normal locking rela-.

tion with said driven member, mechanism Y operable through the reverse movement of the drlven member to turn the worm re-. versely, and manually. operable means for changing the relation of the worm and driven member during operation foraconof the driven member. r

23; Ina device of the class descrlbed the combination or ELgClllVGIl. member, power trolling the speedof the reverse movement:

driven means for operating said memberin' one direction, including a worm having a locking relation with the driven member,

means for operating-the driven member in the reverse direction; means for disconnecting the driven member and'the power for operating the same, mechanism whereby. the worm is operated by the drlven me'mber in this reverse movement and manually operable means for changingthe relation of the worm and driven member during operation for controllingthe reverse operation of the driven member. y i I 24'. In a device of the class described the combination of a power element, a worm wheel, a Worm driven from said power ele-' ment having a locking relation with the worm wheel, gearing connecting the worm and worm wheel, means for disconnecting the power element from the worm, means,

for driving the worm wheel in the reversed direction and means for advancing or retarding the said gearing so as to vary the relation of the worm with the'worm wheel in its reverse operation and control the reverse movement of the worm wheel; i

25. In a device of the class described, the

combination of a driven member, means inrelation between the Worm and the driven eluding a worm for driving said member in member. 10

a forward direction, said \vorm having a in testimony whereof I have aflixed my frictional brake relation with the driven signature in presence of two Witnesses. 5 1'116111b61', and mechanism operated by the GEORGE E. READ.

driven member in its reverse movement Witnesses:

for driving the Worm, the same means A MARY E. COMEGYS,

being operable to establish the braking W. V. TEFFT.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

